Their statement is probably incorrect. This says that 39% of India’s population is “vegetarian” (with the definition left to the respondent): https://www.pewresearch.org/short-reads/2021/07/08/eight-in-ten-indians-limit-meat-in-their-diets-and-four-in-ten-consider-themselves-vegetarian/

I see claims that 9% of the population is vegan, but can’t find the source of that figure (on brief examination).

That’s only if it’s on a GFI. The resistance to Earth for a typical human is well below the “boy this space heater sure is drawing a lot of power” line that a breaker detects.

You can know that it doesn’t do something without knowing what it does. For example, there’s a light switch in my house in a room with a light. I know that flipping that switch does not turn the light on… But I don’t know what it does.

In most industries for expensive items, manufacturers devise warranties to run out before the product is broken. Making it longer has a relatively small benefit (consumers might put a little bit more confidence in the longevity of a product with a 25 year warranty than one with a 20 year warranty), and making it too long has a pretty high cost (a bunch of warranty claims).

Especially if the useful lifetime is not well known, the incentive is for manufacturers to underpromise in their warranties. All of this applied to solar panels sold 25 years ago, and 25 years was long enough to sell people in solar panels and a line of credit as something that would pay for itself. In that context, I think it would be surprising if the panels didn’t last far longer than the warranty promised.